logd: libsysutils: logd startup outside init environment
Change-Id: I3426b6c3eebdd0c8258e966dcaaaa2825d7a23d1
diff --git a/include/sysutils/FrameworkListener.h b/include/sysutils/FrameworkListener.h
index f1a4b43..18049cd 100644
--- a/include/sysutils/FrameworkListener.h
+++ b/include/sysutils/FrameworkListener.h
@@ -36,6 +36,7 @@
public:
FrameworkListener(const char *socketName);
FrameworkListener(const char *socketName, bool withSeq);
+ FrameworkListener(int sock);
virtual ~FrameworkListener() {}
protected:
diff --git a/libsysutils/src/FrameworkListener.cpp b/libsysutils/src/FrameworkListener.cpp
index a5ffda2..01ed54e 100644
--- a/libsysutils/src/FrameworkListener.cpp
+++ b/libsysutils/src/FrameworkListener.cpp
@@ -39,6 +39,11 @@
init(socketName, false);
}
+FrameworkListener::FrameworkListener(int sock) :
+ SocketListener(sock, true) {
+ init(NULL, false);
+}
+
void FrameworkListener::init(const char *socketName UNUSED, bool withSeq) {
mCommands = new FrameworkCommandCollection();
errorRate = 0;
diff --git a/logd/CommandListener.cpp b/logd/CommandListener.cpp
index 0bb233a..a7bf92b 100644
--- a/logd/CommandListener.cpp
+++ b/logd/CommandListener.cpp
@@ -24,6 +24,7 @@
#include <sys/socket.h>
#include <sys/types.h>
+#include <cutils/sockets.h>
#include <private/android_filesystem_config.h>
#include <sysutils/SocketClient.h>
@@ -32,7 +33,7 @@
CommandListener::CommandListener(LogBuffer *buf, LogReader * /*reader*/,
LogListener * /*swl*/)
- : FrameworkListener("logd")
+ : FrameworkListener(getLogSocket())
, mBuf(*buf) {
// registerCmd(new ShutdownCmd(buf, writer, swl));
registerCmd(new ClearCmd(buf));
@@ -283,3 +284,16 @@
return 0;
}
+
+int CommandListener::getLogSocket() {
+ static const char socketName[] = "logd";
+ int sock = android_get_control_socket(socketName);
+
+ if (sock < 0) {
+ sock = socket_local_server(socketName,
+ ANDROID_SOCKET_NAMESPACE_RESERVED,
+ SOCK_STREAM);
+ }
+
+ return sock;
+}
diff --git a/logd/CommandListener.h b/logd/CommandListener.h
index 1290519..cd1c306 100644
--- a/logd/CommandListener.h
+++ b/logd/CommandListener.h
@@ -31,6 +31,8 @@
virtual ~CommandListener() {}
private:
+ static int getLogSocket();
+
class ShutdownCmd : public LogCommand {
LogBuffer &mBuf;
LogReader &mReader;
diff --git a/logd/LogListener.cpp b/logd/LogListener.cpp
index b835b4f..ed5b391 100644
--- a/logd/LogListener.cpp
+++ b/logd/LogListener.cpp
@@ -107,7 +107,15 @@
}
int LogListener::getLogSocket() {
- int sock = android_get_control_socket("logdw");
+ static const char socketName[] = "logdw";
+ int sock = android_get_control_socket(socketName);
+
+ if (sock < 0) {
+ sock = socket_local_server(socketName,
+ ANDROID_SOCKET_NAMESPACE_RESERVED,
+ SOCK_DGRAM);
+ }
+
int on = 1;
if (setsockopt(sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0) {
return -1;
diff --git a/logd/LogReader.cpp b/logd/LogReader.cpp
index 60a3507..51aa2ad 100644
--- a/logd/LogReader.cpp
+++ b/logd/LogReader.cpp
@@ -17,13 +17,14 @@
#include <ctype.h>
#include <poll.h>
#include <sys/socket.h>
+
#include <cutils/sockets.h>
#include "LogReader.h"
#include "FlushCommand.h"
LogReader::LogReader(LogBuffer *logbuf)
- : SocketListener("logdr", true)
+ : SocketListener(getLogSocket(), true)
, mLogbuf(*logbuf)
{ }
@@ -167,3 +168,16 @@
}
LogTimeEntry::unlock();
}
+
+int LogReader::getLogSocket() {
+ static const char socketName[] = "logdr";
+ int sock = android_get_control_socket(socketName);
+
+ if (sock < 0) {
+ sock = socket_local_server(socketName,
+ ANDROID_SOCKET_NAMESPACE_RESERVED,
+ SOCK_SEQPACKET);
+ }
+
+ return sock;
+}
diff --git a/logd/LogReader.h b/logd/LogReader.h
index b267c75..91559a3 100644
--- a/logd/LogReader.h
+++ b/logd/LogReader.h
@@ -34,6 +34,8 @@
virtual bool onDataAvailable(SocketClient *cli);
private:
+ static int getLogSocket();
+
void doSocketDelete(SocketClient *cli);
};
diff --git a/logd/main.cpp b/logd/main.cpp
index 7346e2f..04eef4a 100644
--- a/logd/main.cpp
+++ b/logd/main.cpp
@@ -36,6 +36,35 @@
#include "LogListener.h"
#include "LogAudit.h"
+//
+// The service is designed to be run by init, it does not respond well
+// to starting up manually. When starting up manually the sockets will
+// fail to open typically for one of the following reasons:
+// EADDRINUSE if logger is running.
+// EACCESS if started without precautions (below)
+//
+// Here is a cookbook procedure for starting up logd manually assuming
+// init is out of the way, pedantically all permissions and selinux
+// security is put back in place:
+//
+// setenforce 0
+// rm /dev/socket/logd*
+// chmod 777 /dev/socket
+// # here is where you would attach the debugger or valgrind for example
+// runcon u:r:logd:s0 /system/bin/logd </dev/null >/dev/null 2>&1 &
+// sleep 1
+// chmod 755 /dev/socket
+// chown logd.logd /dev/socket/logd*
+// restorecon /dev/socket/logd*
+// setenforce 1
+//
+// If minimalism prevails, typical for debugging and security is not a concern:
+//
+// setenforce 0
+// chmod 777 /dev/socket
+// logd
+//
+
static int drop_privs() {
struct sched_param param;
memset(¶m, 0, sizeof(param));